Rubber-set riffle.



QHORN.

- RUBBER SET HlFFLE.

APPucATlpfl FILED APR. 22, 191B.

'1,%76,529. Patented Aug. 20, 1918.

Jmf 2V0 722,

AUTET JOE HORN, OF RAY, ARIZONA.

RUBBER-SET BIFFLE.

Application filed April 22, 1918.

To all whom it may concern:

Be it known that I, J OEHORN, a citizen of the United States, residingat Bay, in the county of Final and State of Arizona, have invented newand useful Improvements in Rubber-Set Rilhes, of which the following isa specification.

My invention relates to ore concentrators,

and especially to rifile boards and my in-' vention consists of thenovel features herein shown, described and claimed.

Figure 1 is a perspective of a rifiie board embodying the principles ofmy invention.

Fig. 2 is a cross section.

Fig. 3 is an enlarged fragmentary perspective detail.

Fig. l is a fragmentary cross section on an enlarged scale.

I take a sheet 1 of onequarter inch linoleum; cut grooves 2 from theupper face of the sheet about three-sixteenths of an inch deep, applyrubber cement to the grooved face of the linoleum and to the grooves,and drive the metal rifile plates 3 tightly into the grooves; then Iapply a coat 4 of rubber cement to the lower face of the linoleum; andapply the linoleum to the deck boards 5. The rubber cement makes a bondbetween the rifile plates and the linoleum to prevent Water from runningaround the riffie plates in the grooves and to hold the riflie platessecurely in position.

The linoleum is Water-proof, and the rubber cement is water-proof andthe linoleum is imperforate and makes a water-proof face for the riflleboard.

By the use of thin metal riiiie plates 3, I am able to greatly increasethe number of riflie plates upon a given area of board.

My present invention is alternative to the Specification of LettersPatent.

Patented Aug. 20, 1918.

Serial No. 230,025.

construction shown, described and claimed in my companion application,filed Dec. 4, 1917, Serial No. 205,425 for rubber set riffies for oreconcentrators and the like.

Various changes may be made without departing from the spirit of myinvention as claimed.

I claim:

1. In a concentrating table or the like, a wooden deck; a coating ofwater-proof adhesive material applied to the wooden deck; a sheet ofnon-metallic water-proof material applied to the adhesive material, andhaving grooves in its upper face; and rifile plates driven into thegrooves.

2. In a concentrating table or the like, a wooden deck; a coating ofwaterproof adhesive material applied to the wooden deck; a sheet ofnon-metallic water-proof material applied to the adhesive material, andhaving grooves in its upper face; water-proof adhesive material appliedto the grooves; and rifl'le plates driven into the grooves andwaterproof adhesive material.

3. As an article of manufacture, a sheet of linoleum having grooves inits upper face, rubber cement applied to the upper face of the linoleumand to the grooves, and metal riflie plates driven into the grooves.

41:- In a concentrating table or the like, a wooden deck, a coating ofrubber cement applied to the wooden deck, a sheet of linoleum applied tothe rubber cement and having grooves in its upper face, rubber cementapplied to the upper face of the linoleum and to the grooves, and metalrifle plates driven into the grooves and cement.

In testimony whereof I have signed my name to this specification.

J OE HORN.

Eoptee of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

